This undated artist rendering provided by the New York Public Library from dbox / Foster + Partners shows the entrance to a new lending library in a proposed $300 million renovation of its landmark Fifth Avenue building that will more than double its public space, the New York Public Library president said Wednesday, Jan. 19, 2012. AP Photo/New York Public Library from dbox / Foster + Partners.

NEW YORK (AFP).- A shy New York woman whom no one took to be wealthy left a shockingly happy surprise when she died: $20 million in donations to the city's libraries and main park.

Mary McConnell Bailey lived modestly and volunteered at a hospital and schools, before dying at 88 last year, the New York Post newspaper reported Tuesday.

Now, the Post says, it emerges that the New York Public Library and Central Park Conservancy recently received checks from her estate worth $10 million a piece.

"You would have never known" she was rich, the Post quoted her former best friend and neighbor, Lizanne Stoll, as saying. "When we went to lunch, it was usually Dutch," she said, meaning everyone paid for themselves.

The library's top donations official told the newspaper he'd met the unassuming Bailey often, but couldn't remember her voice. "That's how soft-spoken she was."

According to the Post, Bailey came from a wealthy family and moved to New York in the 1940s, then inherited a fortune. However, she spent little and lived in a basic Manhattan apartment.